The general presentation of switching amplifiers may be working against you (and I don't mean this in a derogatory way).
The switching amplifiers I've owned didn't like silver anything. Check out NuForce cables. When I upgraded my AC mains to shielded 20 amp dedicated there was a noticeable improvement.
Also, when I used tube preamplifiers in front of switching amps I found I was listening to the preamp lower the resolution and transparency and masking my speakers shortcomings. It took a substantial speaker upgrade before I realized this.
IMO, switching amplifiers are ruthlessly revealing and many blame the amplifiers rather than poor system synergy. Class D can be economical but it's simply not easy. This is why I still use nCores in my studio. I've returned to tube amplification in the main system. In both cases I've always used subwoofers.
The switching amplifiers I've owned didn't like silver anything. Check out NuForce cables. When I upgraded my AC mains to shielded 20 amp dedicated there was a noticeable improvement.
Also, when I used tube preamplifiers in front of switching amps I found I was listening to the preamp lower the resolution and transparency and masking my speakers shortcomings. It took a substantial speaker upgrade before I realized this.
IMO, switching amplifiers are ruthlessly revealing and many blame the amplifiers rather than poor system synergy. Class D can be economical but it's simply not easy. This is why I still use nCores in my studio. I've returned to tube amplification in the main system. In both cases I've always used subwoofers.